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Common Infectious Diseases Worldwide

Sources: The Centers for Disease Control (CDC); The World Health Organization (WHO). The following is a list of the most common infectious diseases throughout the world today. Accurate caseload…

The Pangram Challenge Quiz

Are you a word nerd? Do you love a good challenge? In this quiz, we'll be focusing on pangram sentences — those that use every letter of the alphabet at least once. So, put on your thinking cap and…

The Chemistry of Biology: Lipids

LipidsThe Chemistry of BiologyIntroductionAtomic TheoryChemical Reactions: Ionic, Covalent, and Polar Covalent BondsWaterOrganic ChemistryCarbohydratesLipidsProteinsNucleic AcidsVitamins and Minerals…

The Journals of Lewis & Clark: May 20, 1805

by Meriwether Lewis and William Clark May 19, 1805May 21, 1805May 20, 1805 Monday May 20th 1805 Set out at an early hour as usual, the banks being favourable and water strong we…

Anatomy and
Physiology: The Four Chambers

The Four ChambersAnatomy and PhysiologyThe HeartAnatomy of the HeartThe Four ChambersThe Heart's Own BloodECG: Measuring a Beat So why do you need four chambers if three worked just fine for…

1997–98 Major Stakes Races

Winners of major stakes races from Nov. 7, 1997 through Oct. 16, 1998; all paces and trots cover one mile; (BC) indicates year-end Breeders' Crown series. LATE…

Mosquito and Tick-Borne Diseases: Dengue

DengueMosquito and Tick-Borne DiseasesIntroductionYellow FeverDengueWest Nile EncephalitisRocky Mountain Spotted FeverLyme Disease Dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS)…

Anatomy and
Physiology: It's a Long Way Down

It's a Long Way DownAnatomy and PhysiologyThe Digestive SystemStops Along the WayIt's a Long Way DownJack-of-All-TradesRunning Along the TractPancreatic Panacea?What We Do with Our Food The…